Most articles comparing solar financing options frame it as buying vs leasing. The real comparison for most California homeowners in 2026 is between a PPA (Power Purchase Agreement) and a solar loan. Both can get panels on your roof. The differences show up in who owns the system, who claims the tax credit, and how the numbers play out over 10 to 25 years.
There is no universal right answer. The right choice depends on your tax situation, how long you plan to stay in the home, and whether you want the complexity of system ownership. This article lays out the real tradeoffs.
1. How PPA and Solar Loans Work
Power Purchase Agreement (PPA)
A solar company installs panels on your roof at no cost. You do not own the panels. Instead, you agree to buy the electricity they generate at a fixed per-kWh rate (typically around 22 cents). The solar company owns the equipment, handles maintenance, and keeps the tax credit. You pay a monthly solar bill instead of your full SCE bill. The agreement runs 20-25 years.
Solar Loan
You borrow money to purchase the solar system outright. Loan amounts typically run $25,000-45,000 for an Inland Empire home. You own the panels from day one. You claim the 30% federal Investment Tax Credit (ITC), which reduces your federal tax bill by approximately $7,500-13,500. You are responsible for maintenance after warranties expire. Loans run 10-25 years at rates currently ranging from 6-9%.
2. Upfront Cost Difference
This is the most obvious difference and the reason PPAs are popular with homeowners who do not have $0-30,000 sitting available to put toward a solar down payment or full purchase.
The zero upfront cost of a PPA is not free money. The solar company prices the PPA rate (22 cents per kWh) to recoup its investment and profit over the agreement term, including the tax credit it keeps. That is a fair trade for homeowners who want savings without capital outlay or system ownership complexity.
3. Who Actually Benefits from the 30% Tax Credit
The 30% federal Investment Tax Credit is real money: on a $35,000 system, it reduces your federal tax bill by $10,500. But it only works if you have federal tax liability to offset. This is where many solar loan pitches skip a step.
The Tax Credit Reality Check
With a PPA, this question disappears. The solar company claims the credit. You get the benefit indirectly through the lower per-kWh rate (22 cents instead of SCE's 34.5 cents). If your tax situation means you cannot fully use the 30% credit, a PPA may actually leave you ahead.
4. Break-Even Timelines Compared
Break-even for a loan means the cumulative electricity savings exceed the total loan cost. Break-even for a PPA is simpler: every month you pay less than your previous SCE bill is a winning month. The PPA is positive from day one if sized correctly.
The loan wins in total dollar savings over 25 years if you can fully utilize the tax credit and stay in the home. The PPA wins in simplicity, zero upfront risk, and immediate cash flow improvement.
5. What Happens If You Sell
This is the question most homeowners do not think through at signing time.
If you plan to sell in the next 5-7 years, a PPA transfer is simple and does not complicate your equity position. If you plan to stay 15-25 years and retire in the home, a loan with the tax credit captures the most long-term value.
6. NEM 3.0 Impact on Both Options
NEM 3.0, which took effect in April 2023 for new California solar installations, dramatically reduced the credit SCE pays for excess solar exported to the grid. Under the old NEM 2.0, excess solar was credited at near-retail rates. Under NEM 3.0, export credits dropped by roughly 75%.
This change hit solar loans harder than PPAs. The loan payback model depended heavily on net metering export credits to offset the loan cost. With credits 75% lower, loan break-even timelines got longer. Battery storage became much more important to the loan economics.
- -Solar loan break-even timelines extended from 7-9 years to 10-14 years without battery storage
- -PPA savings are not affected by export credit changes because you pay per kWh consumed, not produced
- -Battery storage is now essentially required for a solar loan to make financial sense in California
Under NEM 3.0, the PPA has become more competitive relative to loans than it was three years ago. The loan still wins in total 25-year savings for homeowners with high tax liability and a plan to stay long-term. But the gap narrowed significantly.
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Frequently Asked Questions
It depends on two factors: your federal tax liability and how long you plan to stay. A loan with the 30% tax credit wins in total savings over 25 years if you have the tax liability to use it. A PPA wins in simplicity, zero upfront cost, and immediate positive cash flow from day one.
With a solar loan, you own the system and you claim the 30% Investment Tax Credit. On a $35,000 system, that is approximately $10,500 off your federal tax bill. With a PPA, the solar company owns the system and claims the credit. You do not get the credit directly.
NEM 3.0 reduced export credits by about 75%. This lengthened loan break-even timelines and made battery storage essential for loan economics to work. PPA customers are less affected because they pay per kWh consumed, not exported.
The PPA transfers to the new buyer. Most major solar companies have a standard transfer process. The new buyer takes on your PPA rate for the remaining term. This is generally straightforward but should be disclosed in your listing.
Studies suggest paid-off solar systems add roughly $3-5 per watt to appraised home value. For a typical 8-10 kW Inland Empire system, that is approximately $25,000-50,000 in added value. This is an additional long-term benefit of a loan over a PPA for homeowners who plan to sell.